Improvement of solar cell efficiency using selective emitter
Selective emitter를 이용한 태양전지 효율 향상
-
Hong, Kuen-Kee
(R&D Center, Shinsung Solar Energy Co., Ltd.)
;
- Cho, Kyeong-Yeon (R&D Center, Shinsung Solar Energy Co., Ltd.) ;
- Seo, Jae-Keun (R&D Center, Shinsung Solar Energy Co., Ltd.) ;
- Oh, Dong-Joon (R&D Center, Shinsung Solar Energy Co., Ltd.) ;
- Shim, Ji-Myung (R&D Center, Shinsung Solar Energy Co., Ltd.) ;
- Lee, Hyun-Woo (R&D Center, Shinsung Solar Energy Co., Ltd.) ;
- Kim, Ji-Sun (R&D Center, Shinsung Solar Energy Co., Ltd.) ;
- Shin, Jeong-Eun (R&D Center, Shinsung Solar Energy Co., Ltd.) ;
- Kim, Ji-Su (R&D Center, Shinsung Solar Energy Co., Ltd.) ;
- Lee, Eun-Joo (R&D Center, Shinsung Solar Energy Co., Ltd.) ;
-
Lee, Soo-Hong
(Dept. of Electronic Engineering, Sejong University)
;
- Lee, Hae-Seok (R&D Center, Shinsung Solar Energy Co., Ltd.)
-
홍근기
(신성솔라에너지 기술연구소)
;
- 조경연 (신성솔라에너지 기술연구소) ;
- 서재근 (신성솔라에너지 기술연구소) ;
- 오동준 (신성솔라에너지 기술연구소) ;
- 심지명 (신성솔라에너지 기술연구소) ;
- 이현우 (신성솔라에너지 기술연구소) ;
- 김지선 (신성솔라에너지 기술연구소) ;
- 신정은 (신성솔라에너지 기술연구소) ;
- 김지수 (신성솔라에너지 기술연구소) ;
- 이은주 (신성솔라에너지 기술연구소) ;
-
이수홍
(세종대학교 전자공학과)
;
- 이해석 (신성솔라에너지 기술연구소)
- Published : 2011.11.24
Abstract
The process conditions for high efficiency industrial crystalline Si solar cells with selective emitter were optimized. In the screen printed solar cells, the sheet resistance must be 50-60V/sq. because of metal contact resistance. But the low sheet resistance causes the increase of the recombination and blue response at the short wavelength. Therefore, the screen printed solar cells with homogeneous emitter have limitations of efficiency, and this means that the selective emitter must be used to improve cell efficiency. This work demonstrates the feasibility of a commercially available selective emitter process, based on screen printing and conventional diffusion process. Now, we improved cell efficiency from 18.29% to18.45% by transition of heavy emitter pattern and shallow emitter doping condition.